Fire and burglar alarm system



1,567,121 S. l. DRESSER FIRE AND BURGLAR ALARM SYSTEM Filed April 4,1925 3 Sheets-Sheet 1 5 0077 I Dres's'el- INVENTOR BY M WITNEW ATTORNEYh M r Deck 29 1925- ,567,121

5. l. DRESSER FIRE AND BURGLAR ALARM SYSTEM Filed April-4, 1925 sSheets-Sizeet 2 Fig.2

077 Dresser ATTORNEY I. DRESSER FIRE AND BURGLAR ALARM SYSTEM Dec. 291925 Filed April 4, 1925 3 Sheets-Sheet 3 VII/10172714:

INVENTOR We BY ATTORNEY Patented Dec. 29, 1925.

SCOTT IRYING DRESSER, 0F COATICOOK. QUEBEC. CANADA.

FIRE AND BURGLAR ALARM SYSTEM.

Application filed April To all whom it may concern:

Be it known that 1, Score I.-l)nnssnn, a subject of the King of GreatBritain, residing at Coaticook, in the Province of Quebee and Dominionof Canada, have invented new and useful Improvements in Fire and BurglarAlarm Systems, of which the following is a specification.

My present invention has reference to a combined fire and burglar alarmsystem.

My object is to arrange in a dwelling an audible alarm actuated byweighted means connected to a breakable and burnable element trainedaround the diflerent parts of the dwelling and also to the doors andwindows thereof as well as other like elements trained to similar partsin a garage, barn or other out-house adjacent to the dwelling, andwhereby the severing of any of the said elements will permit of theweighted means actuating the-alarm so that the occupant of the dwellingwill know that a fire has oc curred or a burglary has been attempted.

In addition to the foregoing broadly stated object, the inventionfurther consists in means for severing the inflammable flexible elementthat actuates an alarm upon the opening of a window or door, and furtherdetails of construction as well as the operative arrangement andcombination of parts such as is set forth in the following descriptionand pointed out with particularity in the appended claim.

In the drawings which accompany and form part of this application Figure1 is a perspective view to illustrate my improved fire and burglar alarmsystem.

Figure 2 is an enlarged side elevation of the audible alarm and thecasing therefor.

Figure 3 is a plan view to illustrate the arrangement of the knife orcord severing means on a swingable door.

Figure 4 is an elevation thereof.

Figure 5 is a sectional view through a window casing showing thearrangement of the cord severing means thereon.

Figure 6 is a sectional view on an enlarged scale and approximately onthe line 66 of Figure 5.

In Figure 1 of the drawings, I have shown diagrammatically a dwelling 1,a garage or stable 2 and a barn 3. Between the dwelling 1, the garageand the barn there are arranged pipe members 3, and through these pipemembers there are trained flexible ele- Serial No. 20,790.

ments 4.- and 5 respectively. The elements a and 5 are of aninflann'nable nature, and as disclosed in the diagram of the barn in thesaid Figure l, the element is trained through suitable guide means (5around the side and the top or roof of the barn. Also the elementreceived in the barn may be ar ranged in a manner hereinafter to bedescribed adjacent to the doors of the barn. In the showing of thedrawings, the end of the flexible element has its end secured to the topof the barn. The flexible element 5 leading through the pipe 3 to thegarage 2 is trained through guide means in the said garage and has itsend passed through an opening in a plate 7, the said end being: knotted,as at 8. The plate is formed on one end of a bracket 9 that is suitablysupported in the garage. Pivoted to one end of the plate there is alever 10. The lever is provided with an inwardly flared opening 11through which the flexible element- & passes. The opening 11 is arrangednear the pivot 12 between the lever and the plate 7. The reamed openingprovides a cutting edge at the lower face of the lever 10 so that aswinging of the lever will sever the cord 4. The outer end of the lever10 is connected by a link or similar element 13 to the swinging door 14-of the garage, so that the opening of the garage will sever the flexibleelement a. Also a fire occurring in the garage will likewise sever theflexible element.

The cutting means for the inflammable element 4, described only inconnection with the garage 2 is also designed for use on other similarflexible and inflammable elements that are trained through parts of thedwelling 1 and the barn 3 or other outbuildings where doors or swingingwindows are employed. The dwelling 1 has also arranged therein a.flexible inflammable element 15 which has branches connected to bracketssimilar to the brackets 9 and through flared openings in levers similarto the lever 10, these levers, as previously inferred, being connectedby means similar to the means 13 to the swinging doors. In ad dition tothis other branches of the flexible element 15 are trained throughcutting eyes in levers 16 which are pivoted adjacent one of their endson brackets 17 secured to window casings. The levers 16 opposite thepivot ends thereof are provided with elements 18, preferably but notnecessarily of [ill a breakable nature the said elements being connectedto or contacting with small brackets 19 on the window sash. An attemptto open the window sash will result in the swinging of the lever 16 sothat the branches 20 of the element- 15 will be cut.

All of the flexible elements 4, 5, and 15 have their ends received inthe dwelling 1 connected to weights 21 respectively, and these weightsare in the path of contact with a flange or platform 22 formed on anoii'set end of a lever 23. The lever is received in and is pivotallyconnected to the frame or casing of a spring wound motor The maintoothed wheel of the motor operates a pinion on whose shaft there is a d26. The disk is provided with a notch and the end of the lever arrangedtl'lQI'QOYQl is formed with a finger 28 to be received in the notch. Thelever is influenced by a spring 29 to bring the finger over theperiphery of the disk 26 and into the notch 27. On the referred to shaftfor the disk 26 there is an escapement wheel 3O engaged by the teeth ofan esoapement clement 3-1 and the shaft for the element 31 has securedthereon arod 32 provided 1 with ahead 33 which is contractable with anaudible alarm in the nature of a bell 34. lhus it will be apparent thatupon the breakage of any of the flexible elements the weight 21connected thereto will drop on to the flange 22 of the lever 23, causingthe swinging of the same to bring its finger 28 out of the notch of thedisk 26 and thereby permit the turning of the motor and impart avibratory or swinging movement to the head carrying rod 22 to cause thesame to intermittently contact with the bell 3e and sound the alarm. Bythis simple means the occupant of the dwelling will be. continuouslynotified that a fire in his dwelling, g rage, barn or other out-buildinghas occurred or that an attempt has been made to burglarize suchbuildings. The alarm,

of course, will be sounded as long as the motor is operated and themotor is operated as long as the weight 21 remains on the lever. i

l laving described the invention, I claim A combined burglar and firealarm, comprising a motor operated al'arn'i, and said motor including anotchedwheel, a pivotally supported brake lever having'a tooth to eninthe notch oi the wheel to hold the motor inactive, weights suspendedabove the lever flexible burnable and breakable elements to which theweights are attached and said elements designed to be trained around therooms oi a building, a bracket to which the ends of theelements'aresecured a lever pivotally secured on the bracket having afiaredopening terminating in a knife edge through which the flexibleclement passes, and said lever having a loose connection with aswingable or movable portion of the building. such as .a door or windowwhereby the lever will be swung upon the opening of such element tosever the flexible element and permit of the weight dropping on to thebrake to influence the. latter to permit of the actuation of the motor.In testimony whereoi I aifix my signature.

SCOTT IRVING DRESSER.

